BUILDING AS-843 NEW RI-7ER, NORTH CAROLINA NOVEMBER 13, 1992'

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1 ENVIRONMENTAL & REGULATORY CONSULTANTS, INC. CLOSURE/TANK REMOVAL REPORT MARINE CORPS AIR STATION BUILDING AS-843 NEW RI-7ER, NORTH CAROLINA NAVFAC CONSTR. CONTR. NO. N B-7392 NOVEMBER 13, 1992' Prepared for: Prepared by: Environmental Consultants, & Regulatory Inc. Mr. Charlie Allsop Jones & Frank, Inc. 633 Maywood Ave. Raleigh, N. C. Reviewed by: Senior Professional 1100 Logger Ct., Ste F-l 02 / Raleigh, N.C Phone: (919) l Fax: (919) recycled paper

2 NOTICE 0 ERC was not present during the removal of the underground storage tank(s), which are the subject of this report. ERC's participation was limited to compiling information, supplied by Jones & Frank, into report form suitable for submittal to the NCDEHNR-DEM. l Soils and groundwater impacted by petroleum hydrocarbons and the presence of "free producttl were indicated at various sites. At the direction of representatives of NAVFAC, neither Jones & Frank nor ERC gave the DEM 24 hour notices as required by 40 CFR a At the direction of a NAVFAC representatlde Jones & Frank backfilled excavated UST basins with impacted soil previously excavated during the UST removal process. ENVIRONMENTAL 81 REGULATORV CONSULTANTS, INC.

3 TABLE OF CONTENTS PAGE 1.0 Introduction Tank Abandonment Procedures Soil Removal and Soil Sample Collection Presence of Free Product Conclusions Disclaimer... 4 LiST OF FIGURES FOLLOWS PAGE Figure 1: Site Map i 1 APPENDIX I U.S.T. Removal Data Sheet ENVIRONMENTAL 2% REGULATOAV CONSULTANTS, IYC.

4 1.0 INTRODUCTION 1 At the request of Jones & Frank (J&F), Environmental & Regulatory Consultants, Inc. (ERC) was retained to compile, report and evaluate field and analytical data associated with the excavation and removal of underground storage tanks located at the Marine Corps Air Station, New River, North Carolina and generate reports of those activities. This report addresses the removal of two tanks at building AS-843 (Figure l), under NAVFAC construction contract No. N B Subsequent to the removal of the UST, ERC was presented with data reported during excavation and removal activities (Appendix I) and documentation of samples (if collected) for testing of the presence/absence of petroleum hydrocarbons t. in the soils and/or groundwater associated with the UST area. 2.0 TANK ABANDONMENT PROCEDURES On 1 September 1992, one steel, 550 gallon diesel fuel UST (4.0' dia. x 6-O'), and one steel, 1000 gallon diesel UST (4.0' dia. x 10.5') were excavated and removed from the subgrade by J&F personnel. The fill material overlying the USTs was carefully excavated to avoid puncturing the tanks and underground delivery and vent lines. Upon exposure of the top and ends of each UST and the associated piping, the product delivery lines were excavated and removed from the subgrade or rendered non-usable. Dry ice was inserted into the tanks to displace volatile organic vapors and reduce the oxygen level in each tank to less than 8% in order to lower the risk of explosion. ENVIRONMENTAL & REGULATORY CONSULTANTS, INC.

5 FULL LINE INTO &DC. - :i GRASSI - K ENVIRONMENTAL & REGULATORV CONSULTANTS, INC.

6 f I 2 After the inerting process was completed, the atmosphere within the UST was checked with an LEL/OZ meter. The soil around the tanks was then excavated until the tank could be removed. The tank were properly secured, marked, labeled, and transported for proper disposal. 3.0 SOIL REMOVAL AND SOIL SAMPLE COLLECTION The tank pit soils were visually inspected for the presence/absence of petroleum hydrocarbons and were= field screened using a flame-ionization detector (FID) due to high moisture and petroleum content in the excavated soils. On September 1, 1992, one 550 gallon steel, diesel UST, and one 1000 gallon steel, diesel UST were removed from the tank basin. Soil samples collected from the base of the final excavation were not screened using the FID, due to their high moisture content and the presence of free -. product noted in the soils. Vapor levels of soils dllring the exca n process were not documented in the field data presented to ERC. Soil samples were collected from the backhoe auger bucket utilizing new latex gloves during each sampling event. The soil samples collected from the base of the final excavation were not submitted for laboratory analysis due to the presence of phase separated hydrocarbons in the soils removed from the excavation. I ; I ENVIRONMENTAL & REGULATORY CONSULTANTS, INC.

7 The final excavated tank basin measured 14-feet by 14-feet by 8- feet deep. At the direction of NAVFAC, and due to the apparent proximity to groundwater, and safety consideratiors at the site, the excavation was backfilled pending additional site investigation. 4.0 PRESENCE OF FREE PRODUCT 3 Subsequent to the removal of the UST at the subject site, samples were collected from the excavated tank basin. The samples were not submitted to the laboratory for analysis due to the presence of free product in the soils removed from the excavation. At the direction of Brent Rouse, representative of NAVFAC, and due to the apparent proximity to groundwater, and safety considerations at the site, the excavation was backfilled bending additional site investigation. 5.0 CONCLUSIONS Based on the findings outlined in this report, ERC offers the following conclusions: l Analytical results were not available for this site due to the presence of free product in the excavation. 0 At the direction of Brent Rouse, representative of NAVFAC, and due to the apparent proximity to groundwater, and safety considerations at the site, the excavation was backfilled pending additional site investigation. ENVIRONMENTAL 81 REGULATORY CONSULTANTS, INC.

8 4 6.0 DISCLAIMER The author of this report, Environmental & Regulatory Consultants, Inc. (ERC) of Raleigh, Wake County, North Carolina, hereby gives notice that any statement or opinion contained in this report prepared by ERC shall not be construed to create any warranty or representation that the real property on which the investigation was conducted is free of pollution or complies with any or all applicable regulatory or statutory requirements, or that the property is fit for any particular purpose. Unless otherwise indicated in this report, no attempt was made to check on the compliance of present or past owners of the site with federal, state, or local laws and regulations. The conclusions presented in this report were based upon the servicestdescribed, and not on scientific tasks or procedures beyond the scope of described services or the time and budgetary constraints imposed by the client. Any person or entity considering the use, acquisition or other involvement or Lctivity concerning the property which is the subject of this report should enter into any use, occupation, acquisition or the like on sole reliance of its own judgement and on its own personal investigation of such property, and not in reliance upon any representation by ERC regarding such property, the character, quality, or value thereof. ERC has developed this report in a professional manner using that degree of skill and care exercised for similar projects under similar conditions by reputable and competent environmental consultants. ERC shall not be responsible for conditions or consequences arising from relevant facts that were concealed, withheld or not fully disclosed at the time this report was prepared. ENVIRONMENTAL & REGULATORY CONSULTANTS, INC.

9 i I I 1 Additionally, any comments or observations pertaining to field conditions or operations are based on recommendations presented in the Technical Closure Plan prepared by Environmental Solutions, Inc. and not the direct observations of ERC personnel. The procedures outlined in the Technical Closure Plan are an overview of the activities associated with the excavation and removal of UST to assist in the collection of data presented in this report. 5 ENVIRONMENTAL & REGULATORY CONSULTANTS, INC.

10 A?PENDIX I U.S.T. Removai Data Sheet 1 I ENVIRONMENTAL & REGULATORY CONSULTANTS, INC.

11 SiLe Loca~ioorl: PID DATA (PPH) 7 A I I. Cl1a i II or cus~ocly Iorms (cot) should d be forwarded to ERC, Inc. A ~(3 bi!usiki _t!& nttaclrecl to Lhis documc!lt. lndiceits that:

12 (AFFILIATEOFPEELE'SELECTRlCCO..INC.) 40lPhRNELLSTREET WESTCOLUMBIA.SC29169 (803) / FAX(803) Manifest for Underground Tank Disposal Peele's Pump and Tank Service Remove Underground Storage Tanks Camp Lejeune, North Carolina # N B This is to manifest that the storage tank at site was taken to Columbia, South Carolina dismantled as scrap metal on this date (7. 42 as per all local, state, and federal guidelines. Peele's Pump and Tank Co. takes full responsibility and ownership of all tanks removed on this project. Sincerely, Dave Browder